Inhaler for an



(No Model.) G. H. HURD.

INHALBR FOR ANESTHETIGS.

No. 294,047. Patented Feb. 26, 1884.

u. PETERS. ElnotwLnhngraplwr. Washmgimm n. c

UNITED STATES PATENT QFFICE.

GEORGE H. HURD, OF CLEVELAND, OHIO.

INHALER FOR AN/ESTHETICS.

- .SPECIFICATION forming part of Letters Patent No. 294,047, datedFebruary 26, 1884.

Application filed March 15, 1881. (No model.)

To aZZ whom it may concern.-

Be it known that I, Gnonen H. HURD, of Cleveland, in the county ofGuyahoga' and State of Ohio, have invented certain new and usefulImprovements in Anaesthetics and Mechanism for Compounding; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit pertains to make and use it, reference being had to the accompanyingdrawings, which formpart of this specification.

My invention relates to anzesthetics; and it consists in mechanism forcompounding the same, as will be more fully hereinafter described andclaimed.

In the drawings, Figure 1 is a view in per-- spectiv'e, Fig. 2a view inlongitudinal vertical section, and Fig. 3 a view in verticalcrosssection, of the mechanism employed.

A is a reservoir for containing chloroform, ether, or any fluidanaesthetic. The reservoir is filled through an opening at its top,which may or may not be corked.

B is a pipe, which communicates with the reservoir A through the pipe 0.

D is a nozzle opening exteriorly from the pipe 0. The pipe 0, at thejunction between it and the pipe D, is enlarged or chambered, as shownat E, and in this chamber sponge or any suitable porous substance, F, isplaced. Within the communicatingtube 0 is also placed the chargingcockG, provided with a chamber, G.

It will appear from the foregoing description that when the reservoir Acontains chloroform or other anaesthetic, the chamber G of thecharging-cock will be filled when it is turned to register with the ductof the reservoir A, and when thus filled and the cock G .is turned sothat the chamber G shall register or communicate with the duct of thechamber E, the contained charge of chloroform within the chamber G willbe dropped into the chamber E.

At the end or ends of the tube Bis coupled or attached any suitable hoseor pipe, communicating with a receiving-bag or reservoir for containingmy anaesthetic.

The process of operating my mechanism is as follows: After areceiving-bag or reservoir has been connected with the tube B, thechamvaporous or vaporized condition. Meanwhile the cock G has beencharged with its liquid anaesthetic, as described, 7 and its charge isdropped into the chamber 0, thus becoming thoroughly admixed with thenitrous oxide before it is discharged into the tube B, so that the gasreceived into the receiving-bag or reservoir will be an admixture ofnitrous oxide and chloroform, or other liquid anzesthetic, in anyrelative proportion desired.

I am aware that in an inhaler a vaporizingchamber provided with amouthpiece has been combined with an upper reservoir and means forregulating the flow of a liquid from the reservoir to thevaporizing-chamber, and I do not claim such an apparatus.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination, with a reservoir for ether, chloroform, or othersimilar substances,

and a pipe arranged upon a lower level, and connected with saidreservoir by an intermediate pipe, of a stop-cock arranged in saidintermediate pipe, and having a cavity in its side,

whereby definite quantities of the contents of the reservoir may betransferred therefrom to a position to fall toward the pipe below,substantially as described.

2. The combination, with a reservoir and a pipe arranged adjacentthereto on a lower level, of an intermediate connecting-pipe, and meansarranged in said connecting-pipe for transmitting definite quantities ofliquid from the reservoir through said connecting-pipe to the lowerpipe, substantially as described.

3. The combination, with the upper reser- Voir and lower pipe, of theintermediate connecting-pipe provided .witha stop-cock, the

plug of which has a cavity formed in one side,

and the sponge-chamber arranged below said 5 stop-cock, substantially asdescribed, and for the purpose set forth.

In testimony whereof I have signed my n aine to this specification inthe presence of two subscribing witnesses.

GEORGE H. 'HURD.

Witnesses:

J NO. OnowELL, J r., ALBERT E. LYNCH.

